.article_edit .wenji {
    background: #404040;
    position: fixed;
    width: 15%;
    top: 0px;
    bottom: 0px;
}
.article_edit .back_home {
    margin-top: 40px;
    width: 90%;
    text-align: center;
    display: block;
    font-size: 15px;
    padding: 9px 0;
    color: #ec7259;
    border: 1px solid rgba(236,114,89,.8);
    border-radius: 20px;
    -webkit-transition: border-color .2s ease-in;
    -o-transition: border-color .2s ease-in;
    transition: border-color .2s ease-in;
}
.article_edit .mulu {
    background: yellow;
    position: fixed;
    width: 20%;
    left: 15%;
    top: 0px;
    bottom: 0px;
}
.article_edit .editor {
    position: fixed;
    width: 65%;
    left: 35%;
    top: 0px;
    bottom: 0px;
}